NEXARTM-coated hollow fibers for air dehumidification

Lakshmeesha Upadhyaya; Abaynesh Yihdego Gebreyohannes; Faheem Akhtar; Gheorghe Falca; Valentina-Elena Musteata; Dinesh K. Mahalingam; Rneem Almansoury; Kim Choon Ng; Suzana Pereira Nunes

doi:10.1016/j.memsci.2020.118450

NEXARTM-coated hollow fibers for air dehumidification

Lakshmeesha Upadhyaya, Abaynesh Yihdego Gebreyohannes, Faheem Akhtar, Gheorghe Falca, Valentina-Elena Musteata, Dinesh K. Mahalingam, Rneem Almansoury, Kim Choon Ng, Suzana Pereira Nunes

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

Air conditioning is one of the essential requirements for households as well as work stations. Dehumidification in air conditioning is the highest energy-consuming component, where membranes could play a crucial role. In this work, we propose the coating of NEXARTM, a commercial pentablock copolymer in tetrahydrofuran on polyetherimide hollow fiber support for separation of water vapor from humidified air. The block copolymer in tetrahydrofuran forms a lamellar/parallel cylindrical structure separated by equidistance during the morphological transformation process giving its unique characteristics with higher water vapor transfer efficiency. Both vacuum and sweep gas modes of membrane dehumidification strategies are investigated along with the detailed study of the morphological transformation process under a controlled environment, which is supported by comprehensive scanning electron microscopic and atomic force microscopic imaging. The membrane has shown water vapor permeance up to 9089 GPU with water vapor to nitrogen selectivity up to 3870. The membrane can reduce the relative humidity from 80% to 41% proving one of the competitive materials for membrane dehumidification.

Original language	English (US)
Pages (from-to)	118450
Journal	Journal of Membrane Science
DOIs	https://doi.org/10.1016/j.memsci.2020.118450
State	Published - Jul 22 2020

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was sponsored by King Abdullah University of Science and Technology (KAUST), grants REP/1/3988-06-01 and REP/1/3988-09-01. The authors thank Prof. Klaus-Viktor Peinemann, Dr. Jiangtao Li, Prof. William Worek, Prof. Omar Abdel Aziz and Dr. Rory Jordan for valuable discussion in the frame of the KAUST Cooling Initiative.

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https://repository.kaust.edu.sa/bitstream/10754/664386/1/N_NEXAR.pdf

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@article{d400edae88384d129e72f32bcc344b30,

title = "NEXARTM-coated hollow fibers for air dehumidification",

abstract = "Air conditioning is one of the essential requirements for households as well as work stations. Dehumidification in air conditioning is the highest energy-consuming component, where membranes could play a crucial role. In this work, we propose the coating of NEXARTM, a commercial pentablock copolymer in tetrahydrofuran on polyetherimide hollow fiber support for separation of water vapor from humidified air. The block copolymer in tetrahydrofuran forms a lamellar/parallel cylindrical structure separated by equidistance during the morphological transformation process giving its unique characteristics with higher water vapor transfer efficiency. Both vacuum and sweep gas modes of membrane dehumidification strategies are investigated along with the detailed study of the morphological transformation process under a controlled environment, which is supported by comprehensive scanning electron microscopic and atomic force microscopic imaging. The membrane has shown water vapor permeance up to 9089 GPU with water vapor to nitrogen selectivity up to 3870. The membrane can reduce the relative humidity from 80% to 41% proving one of the competitive materials for membrane dehumidification.",

author = "Lakshmeesha Upadhyaya and Gebreyohannes, {Abaynesh Yihdego} and Faheem Akhtar and Gheorghe Falca and Valentina-Elena Musteata and Mahalingam, {Dinesh K.} and Rneem Almansoury and Ng, {Kim Choon} and Nunes, {Suzana Pereira}",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was sponsored by King Abdullah University of Science and Technology (KAUST), grants REP/1/3988-06-01 and REP/1/3988-09-01. The authors thank Prof. Klaus-Viktor Peinemann, Dr. Jiangtao Li, Prof. William Worek, Prof. Omar Abdel Aziz and Dr. Rory Jordan for valuable discussion in the frame of the KAUST Cooling Initiative.",

year = "2020",

month = jul,

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doi = "10.1016/j.memsci.2020.118450",

language = "English (US)",

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journal = "Journal of Membrane Science",

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AU - Upadhyaya, Lakshmeesha

AU - Gebreyohannes, Abaynesh Yihdego

AU - Akhtar, Faheem

AU - Falca, Gheorghe

AU - Musteata, Valentina-Elena

AU - Mahalingam, Dinesh K.

AU - Almansoury, Rneem

AU - Ng, Kim Choon

AU - Nunes, Suzana Pereira

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was sponsored by King Abdullah University of Science and Technology (KAUST), grants REP/1/3988-06-01 and REP/1/3988-09-01. The authors thank Prof. Klaus-Viktor Peinemann, Dr. Jiangtao Li, Prof. William Worek, Prof. Omar Abdel Aziz and Dr. Rory Jordan for valuable discussion in the frame of the KAUST Cooling Initiative.

PY - 2020/7/22

Y1 - 2020/7/22

N2 - Air conditioning is one of the essential requirements for households as well as work stations. Dehumidification in air conditioning is the highest energy-consuming component, where membranes could play a crucial role. In this work, we propose the coating of NEXARTM, a commercial pentablock copolymer in tetrahydrofuran on polyetherimide hollow fiber support for separation of water vapor from humidified air. The block copolymer in tetrahydrofuran forms a lamellar/parallel cylindrical structure separated by equidistance during the morphological transformation process giving its unique characteristics with higher water vapor transfer efficiency. Both vacuum and sweep gas modes of membrane dehumidification strategies are investigated along with the detailed study of the morphological transformation process under a controlled environment, which is supported by comprehensive scanning electron microscopic and atomic force microscopic imaging. The membrane has shown water vapor permeance up to 9089 GPU with water vapor to nitrogen selectivity up to 3870. The membrane can reduce the relative humidity from 80% to 41% proving one of the competitive materials for membrane dehumidification.

AB - Air conditioning is one of the essential requirements for households as well as work stations. Dehumidification in air conditioning is the highest energy-consuming component, where membranes could play a crucial role. In this work, we propose the coating of NEXARTM, a commercial pentablock copolymer in tetrahydrofuran on polyetherimide hollow fiber support for separation of water vapor from humidified air. The block copolymer in tetrahydrofuran forms a lamellar/parallel cylindrical structure separated by equidistance during the morphological transformation process giving its unique characteristics with higher water vapor transfer efficiency. Both vacuum and sweep gas modes of membrane dehumidification strategies are investigated along with the detailed study of the morphological transformation process under a controlled environment, which is supported by comprehensive scanning electron microscopic and atomic force microscopic imaging. The membrane has shown water vapor permeance up to 9089 GPU with water vapor to nitrogen selectivity up to 3870. The membrane can reduce the relative humidity from 80% to 41% proving one of the competitive materials for membrane dehumidification.

UR - http://hdl.handle.net/10754/664386

UR - https://linkinghub.elsevier.com/retrieve/pii/S0376738820310279

U2 - 10.1016/j.memsci.2020.118450

DO - 10.1016/j.memsci.2020.118450

M3 - Article

SN - 0376-7388

SP - 118450

JO - Journal of Membrane Science

JF - Journal of Membrane Science

ER -

NEXARTM-coated hollow fibers for air dehumidification

Abstract

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